<?php
namespace app\admin\library;

class Time
{
    /**
     * 返回今日开始和结束的时间戳
     *
     * @return array
     */
    public static function today()
    {
        return [
            mktime(0, 0, 0, date('m'), date('d'), date('Y')),
            mktime(23, 59, 59, date('m'), date('d'), date('Y'))
        ];
    }

    /**
     * 返回昨日开始和结束的时间戳
     *
     * @return array
     */
    public static function yesterday()
    {
        $yesterday = date('d') - 1;
        return [
            mktime(0, 0, 0, date('m'), $yesterday, date('Y')),
            mktime(23, 59, 59, date('m'), $yesterday, date('Y'))
        ];
    }

    /**
     * 返回某一天开始和结束的时间戳
     *$day 时间戳类型
     * @return array
     */
    public static function oneDay($day = false)
    {
        if (!$day)
            $day = time();
        return self::onePeriod($day, $day);
    }


    /**
     * 返回一段时间的开始和结束时间戳
     * @param $start
     * @param $end
     * @return array
     */
    public static function onePeriod($start, $end)
    {
        if (!$start) {
            $start = time();
        }

        if (!$end) {
            $end = time();
        }
        return [
            mktime(0, 0, 0, date('m', $start), date('d', $start), date('Y', $start)),
            mktime(23, 59, 59, date('m', $end), date('d', $end), date('Y', $end))
        ];
    }

    /**
     * 返回本周开始和结束的时间戳
     *
     * @return array
     */
    public static function week()
    {
        $timestamp = time();
        return [
            strtotime(date('Y-m-d', strtotime("+0 week Monday", $timestamp))),
            strtotime(date('Y-m-d', strtotime("+0 week Sunday", $timestamp))) + 24 * 3600 - 1
        ];
    }

    /**
     * 返回上周开始和结束的时间戳
     *
     * @return array
     */
    public static function lastWeek()
    {
        $timestamp = time();
        return [
            strtotime(date('Y-m-d', strtotime("last week Monday", $timestamp))),
            strtotime(date('Y-m-d', strtotime("last week Sunday", $timestamp))) + 24 * 3600 - 1
        ];
    }

    /**
     * 返回本月开始和结束的时间戳
     *
     * @return array
     */
    public static function month($everyDay = false)
    {
        if (!$everyDay) {
            $everyDay = time();
        }

        return [
            mktime(0, 0, 0, date('m', $everyDay), 1, date('Y', $everyDay)),
            mktime(23, 59, 59, date('m', $everyDay), date('t', $everyDay), date('Y', $everyDay))
        ];
    }

    /**
     * @param int $year
     * @param int $month
     * @return array
     * @from 554665488@qq.com
     * @author:yfl
     * @time: 2018年2月8日 15:07:49
     * @describe:返回某一年某一月的开始和结束的时间戳
     */
    public static function yearMonth($year = 2018, $month = 1)
    {
        return [
            $begin = mktime(0, 0, 0, $month, 1, $year),
            $end = mktime(23, 59, 59, $month, date('t', $begin), $year)
        ];
    }

// 返回当前季度的开始时间和结束时间
    public static function quarter($month = 0)
    {
        $month = $month != 0 ? $month : date('n');
        $season = ceil($month / 3);

        return [
            mktime(0, 0, 0, ($season - 1) * 3 + 1, 1, date('Y')),
            mktime(0, 0, 0, $season * 3, 1, date('Y'))
        ];
    }

    /**
     * 返回上个月开始和结束的时间戳
     *
     * @return array
     */
    public static function lastMonth()
    {
        $begin = mktime(0, 0, 0, date('m') - 1, 1, date('Y'));
        $end = mktime(23, 59, 59, date('m') - 1, date('t', $begin), date('Y'));

        return [$begin, $end];
    }

    /**
     * 返回今年开始和结束的时间戳
     *
     * @return array
     */
    public static function year()
    {
        return [
            mktime(0, 0, 0, 1, 1, date('Y')),
            mktime(23, 59, 59, 12, 31, date('Y'))
        ];
    }

    /**
     * @param $year
     * @return array
     * @from 554665488@qq.com
     * @author:yfl
     * @time: 2018年2月9日 17:30:49
     * @describe: 返回莫一年的开始和结束的时间戳
     */
    public static function choseYear($year)
    {
        return [
            mktime(0, 0, 0, 1, 1, $year),
            mktime(23, 59, 59, 12, 31, $year)
        ];
    }

    /**
     * 返回去年开始和结束的时间戳
     *
     * @return array
     */
    public static function lastYear()
    {
        $year = date('Y') - 1;
        return [
            mktime(0, 0, 0, 1, 1, $year),
            mktime(23, 59, 59, 12, 31, $year)
        ];
    }

    /**
     *
     * 获取某一年的开始和结束的时间戳
     * @param null $year
     * @return array|bool
     */
    public static function getYear($year = null)
    {
        if (!$year) {
            return false;
        }

        return [
            mktime(0, 0, 0, 1, 1, $year),
            mktime(23, 59, 59, 12, 31, $year)
        ];

    }

    public static function dayOf()
    {

    }

    /**
     * 获取几天前零点到现在/昨日结束的时间戳
     *
     * @param int $day 天数
     * @param bool $now 返回现在或者昨天结束时间戳
     * @return array
     */
    public static function dayToNow($day = 1, $now = true)
    {
        $end = time();
        if (!$now) {
            list($foo, $end) = self::yesterday();
        }

        return [
            mktime(0, 0, 0, date('m'), date('d') - $day, date('Y')),
            $end
        ];
    }

    /**
     * 返回几天前的时间戳
     *
     * @param int $day
     * @return int
     */
    public static function daysAgo($day = 1)
    {
        $nowTime = time();
        return $nowTime - self::daysToSecond($day);
    }

    /**
     * 返回几天后的时间戳
     *
     * @param int $day
     * @return int
     */
    public static function daysAfter($day = 1)
    {
        $nowTime = time();
        return $nowTime + self::daysToSecond($day);
    }

    /**
     * 天数转换成秒数
     *
     * @param int $day
     * @return int
     */
    public static function daysToSecond($day = 1)
    {
        return $day * 86400;
    }

    /**
     * 周数转换成秒数
     *
     * @param int $week
     * @return int
     */
    public static function weekToSecond($week = 1)
    {
        return self::daysToSecond() * 7 * $week;
    }

    private static function startTimeToEndTime()
    {

    }

    /**
     * 获取一个时间段内的新年起点终点时间戳
     * @param array $timeArr
     */
    public static function getYearTimestamp($timeArr = [])
    {
        if (!$timeArr) {
            return false;
        }

        $start_time = $timeArr[0];
        $end_time = $timeArr[1];

        $start_year = date('Y', $start_time);
        $end_year = date('Y', $end_time);

        $data = [];
        if ($start_year == $end_year) {
            $data = [self::getYear($start_year)];
        } else {
            $change = ($end_year - $start_year) + 1;
            for ($i = 1; $i <= $change; $i++) {
                $data[] = self::getYear($start_year + ($i - 1));
            }
        }

        return $data;
    }
}